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. 2008 Oct 8;2008(4):CD000448. doi: 10.1002/14651858.CD000448.pub3

Kalb 2001.

Methods Concealment: numbered pharmacy 
 Blinding: double‐blind 
 Drop‐outs/withdrawals: none 
 Jadad score: 2‐2‐1 
 IV score: 1‐1‐1‐1‐1‐1
Participants Patients included/analyzed: 72/72 
 Demographics: 48 female, mean age 48 years 
 Diagnosis: mild to moderate depression (DSM‐IV 296.21/31/22/32) 
 Setting: 11 practices (psychiatry, internal medicine, GP) in Germany 
 Baseline: HAMD score 19.7 +/‐ 3.4 hpyericum group, 20.1 +/‐ 2.6 placebo group
Interventions Treatment: Hypericum extract WS 5572 (Neuroplant) 3x1 coated tablet (900 mg) for 6 weeks 
 Control: Placebo for 6 weeks
Outcomes Observation period: 3‐7 days run‐in, 6 weeks treatment 
 Physician‐rated: Hamilton Depression Scale (HAMD, 17 items; response = at least 50% reduction), Clinical Global Impression Index (CGI) 
 Patient‐rated: von Zerssen Depression Scale (D‐S), Patient's Global Assessment Scale (GPA)
Notes Trial with adaptive design stopped early due to significant superiority at preplanned interim analysis
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Low risk A ‐ Adequate